Mechanical door stop means



Aug. 6, 1963 w. F. KNAPP MECHANICAL DooR sToP MEANS A? TTOE/VEYS 3,100,122 NECHANICAL DUUR STOP MEANS Wiliiam F. Knapp, Hanghton, La. (90S Wanda Drive, Bossier City, La.) Filed Oct. 7, 196i), Ser. No. 61,243 Claims. (Cl. 292-266) This invention relates to the general field of limiting lthe pivotal movement of one element with respect to a xed stationary member and, more specically, the instant invention pertains to the provision of means for locking a door at any degree of opening or closing with respect to its associated iixed or stationary door jamb.

Another object of this invention is to provide improved means for securing `a door or other closure member in a closed position or at any desired angle with respect to a door jamb when open.

Still another object of this invention is to provide a device of the type briey described above which is operable in conjunction with conventional door handle-s.

A further object of this invention is to provide a `door check or devices for retaining a door or gate in any desired open position, the door check being operable automatically from a door latch yor door knob to permit the door to `freely land easily swing from the door jamb while the door check means are rendered inoperable.

A further object of this invention is to provide means for securing swinging doors, window sashes, and the like, in a closed position or at any angle with respect to a door jamb when pivoted to an open position, and latching the securing means 'against casual displacement when the door or window sash, or similar device, is moved to an open position.

Another object of this invention is to provide a inechanical door stop which will obviate the above-noted disadvantages inherent in =the constructions of prior art devices, and wherein the door check or stop will hold a door or other closure member from `opening or closing at any degree of its arc of movement.

Still another object of this invention is to provide a mechanical door stop or check which may be automatically operated by the turning of a handle; that is, when the handle is turned to eiect an opening of a door or closure member, the operation of the handle automatically releases the locking mechanism to permit the door or closure member to be pivoted to an open position, and when the handle is in its neutral or released position, the door or closure member becomes automatically locked.

It is still another object of this invention to provide a mechanical door stop which may be readily attached to the conventional doors of automobiles, houses, cabinets, etcetera.

This invention contemplates, las la still -further object thereof, the provision of a door stop or check wherein the mechanism for operating the same may be placed in -a chase or mortise in the door or between the side walls thereof whereby the motif or design on either side of the `door is not affected.

This invention has, as another object thereof, the provision of door ystop or door check means of the type referred to supra, wherein the means is non-complex in construction and assembly, inexpensive to manufacture, and durable in use.

Other and further objects of the instant invention will become more evident from a consideration of the following specification when read in conjunction with the annexed drawings, in which:

FIGURE l is a fragmentary -side elevation-al view of a `conventional automobile body including a door partially broken away :and illustrating this invention as incorporated therein;

3,100,122 Patented Aug. 6, 1963 fire FIGURE 2 is a bottom plan View of the door stop or check, FIGURE 2 `being taken substantially upon the horizontal plane of line 2-2 of FIGURE l, looking Iin the direction of lthe arrows;

FIGURE 3 is a detail cross-sectional view of the door stop or check, FIGURE 3 being taken substantially upon the line 3 3 of FIGURE 2, looking in the direction of the arrows;

FIGURE 4 is a detail .cross-sectional View of the door stop or check illustrated in FIGURE l, FIGURE 4 being taken substantially on the vertical plane of line 4-4 of FIGURE 3, looking in the direction of the arrows;

FIGURE 5 is a fragmentary det-ail cross-sectional view of means operable to hold the door latch or door stop means in inoperative position, FIGURE 5 being taken substantially on the horizontal plane of line 5 5 of FIGURE l, looking in the direction of the arrows;

FIGURE 6 illustrates the adaptation of the instant invention toa conventional house door;

FIGURE 7 is an enlarged Idetail cross-sectional view of the door and door stop or latch illustrated in FIGURE 6, FIGURE 7 being taken substantially on the horizon-tal plane of line 7-7 of FIGURE 6, looking in the direction of the arrows;

FIGURE 8 is an enlarged end elevational View of the door locking or lat-ching mechanism lshown in FIGURE 6, FIGURE 8 being taken substantially on the vertical plane of line 8-8 of FIGURE 7, looking in the direction of the arrows; and

FIGURE 9 is a side elevational view partly broken away, FIGURE 9 illustrating a second embodiment of this invention.

Referring now more specifically to FIGURES l to 5, inclusive, reference numeral 10 designates, in general, a door stop or check constructed in accordance 'with the teachings of this invention. The door stop 10 is shown in conjunction with the conventional automobile door 12 and is disposed between the inner and outer door panels 14, 16, respectively. Means (not shown) of a conventional type secure one end of the door stop 10 tot -the upright end lwall 1S of vthe door 12, the end wall '1S being provided with a substantially rectangular opening 20 to serve a purpose to be described infra. The end wall 18 is normally disposed in confined relation relative to .a door jamb 22 when the door 12 is in its normally closed position.

In most conventional automobiles, handle or button means are utilized to operate a normally horizontally reciprocating door locking bolt. The arrangements are many and do not, per se, constitute a part of this invention. However, and for the purpose of illustration of the present invention, reference numeral 24 designates a conventional door handle which is depressible to actuate a door bolt (not shown), through suitable mechanisms, to move the bolt to its unlocked position. Connected to this mechanism or to the bolt is one end of an elongated strip member 26 supported for reciprocation adjacent its other end on a pin 28 which extends transversely between the door panels 14, 16 and engages within an elongated longitudinally-extending slot 30. The underside of the strip member 26 is recessed toprovide a shoulder 32 extending transversely thereof and a longitudinallyextending tongue 34. Thu-s, as the handle 24 is depressed to unlock the door 12, the strip member 26 is moved to the right, as viewed in FIGURE l. Supported on a pin 36 which extends transversely between the panels 14, 16 (see FIGURES l and 5) is a bell crank lever 38 and a normally depending arm i0 on which is secured 'a roller 42. The roller 42 engages the shoulder 32 beneath the tongue 34 and is constantly biased for movement in a clockwise direction, reference again being made to FIG- URE l, -by virtue of means to -be described below, where- 3 by the roller 42 maintains constant engagement against its adjacent shoulder 32. It will be understood, of course, that lwith the shifting movement of the strip member 26 to the right, the bell crank lever 38 pivots counterclock- Wise against the force exerted by the aforementioned biasing means.

The other arm 44 of the bell 'crank lever 38 is laterally odset from the arm 40. As is seen in FIGURES 1 and 5, means are provided to serve a purpose to be described which cooperate with the free end of the arm 44 to prevent the bel-l crank lever 38 yfrom pivoting clockwise under the influence of said biasing means when the strip member 26 is moved to the left, reference being made to FIG- URE 1, that is, in a direction away from the roller 42. The pivotal lock comprises a journal 46 secured by means 4S to the inner door panel 14, the journal 46 having pivotally mounted therein a shaft 59. One end of the shaft S terminates in `a handle 52 which extends through an opening (not shown) formed in the panel 14, and the other end of the shaft 50 has rigidly secured thereto a disc 54. The connection between the disc 54 and the shaft 50 is olf-center, whereby rotation of the shaft 50' effects a swinging movement of the disc 54. The relationship between the disc 54 and the free end of the arm 44 is such that when the `bell crank lever 38 is rotated in a counterclockwise direction the ydisc 54 may be moved by manual manipulation of the handle 52 into the downward path of movement of the free end of the arm 44 thereby effectively preventing and locking the bell crank lever from moving in a clockwise direction. The purpose of these locking means will become more apparent as this specification progresses.

The door check or stop proper comprises a channelshaped main body portion S6 having oppositely-disposed longitudinally-spaced and confronting end walls 5S, 60 integrally connected together by a bight wall 62. The bight Wall 62 adjacent each of the end walls 53, 60 is provided With slots 64, 66, respectively, the end walls 58, 60 being slotted at 68, 70, respectively, the slots 63, 70 being disposed in alignment, one with the other.

The end walls 58, 60 are slotted at 72, 74,'respectively, the slots 72, 74 extending perpendicular to the slots 68, 70 and opening, at their inner ends, into the slots 64, 66, respectively. To serve a purpose to be described below, the bight wall 62 is lformed With the longitudinally-extending bore 76 which terminates in a socket 78 in the end wall 60, and as seen in FIGURE 2 of the drawings, the bore '76 continues at 80 through the end wall 5S.

rPhe end members 58, 60 are provided, respectively,

with substantially cylindrical downwardly-opening guide pockets 82, 84. j Referring now more specically'to FIGURE 4, reference numeral 86 denotes, in general, an inverted substantially U-shaped guide member having the opposed ends thereof disposed within the slots 68, 70, the guide member 86 including a pair of oppositely-disposed, spaced and parallel depending arms 90 connected along one of their adjacent longitudinally-extending sides by means of a bight member 92. The arms 88, 90, adjacent each end of the guide member 86 are provided with a pair of confronting notched-out portions 94, 96, the function of which will be made app arent below.

The 'bright member 92, also adjacent each end thereof, is formed with transversely-extending bores or openings 98, 100 which are adapted, when the guide member 36 isl properly located, to align with the guide pockets 82, 84. The bight member 92 has, spaced inwardly trom the bores 98, 100, a pair of recessed spring-keeper recesses 102, 104.

Disposed for -reciprocation within the guide member S6 is an elongated substantially rectangular ratchet bar 106 having inclined and downwardly-extending ratchet teeth 108 extending substantially throughout its length. Projecting upwardly from each end of the ratchet bar 106 are a pair of guide pins 110, 112 which normally have the free ends thereof slidably received Within the bores 98, 100, respectively, and upon certain circumstances, the guide pins are capable of being moved or extended into the guide pockets 82, 84 when the ratchet bar 106 is moved in a direction toward the bight member 92. Interposed between the bight member 92 and the adjacent side of the ratchet bar 106 are a pair of helicoidal springs 114, 116, one end of the spring 114 being received within the spring-keeper recess 102 while the other spring 116 has one of its ends received within the spring-keeper recess 104. As is clearly seen in the drawings, the other ends of the springs 114, 116 engage against the ratchet bar 106 and constantly bias the ratchet bar 106 for movement in a direction away from the bight member 92.

The ratchet bar 166 is provided with a pair of bosses 118 which project from that side thereof oppositely disposed with respect to the pins 112. As is seen in the drawings, the bosses 11S are disposed immediately adjacent each end of the ratchet bar 106.

A shaft 120 (see FIGURES 2, 3 and 4) extends through the end wall 58 and the bight `62, the shaft 1.20 traversing the slots 64, 66, and having an end received within the socket 78 for-med in the end Wall 60; Mounted on the shaft 120 are the hubs 122 of a pair of levers 124, the hubs 122 `being disposed `within the slots 64, 66 and are xedly secured to the shaft 120 for rotation therewith by means of set screws 126. The levers 124 are pivotally received Within the slots 72, '74, and the `free ends thereof constantly engage against and r-ide on the rounded bosses 118.

The other end of the shaft 12% terminates in a crank arm 128, and the construction is such (reference being made to FIGURE 4) that when the crank arm 128 is rotated in a counterclockwise direction, the shaft 120` will rotate in the same direction causing the free end of the lever 124- to pivot and, through its engagement with the bosses 118, force the ratchet -bar 106 to move inwardly toward the bight 92 against the tension of the springs 114-, 116.

Slida-bly mounted on the inverted substantially U-shaped guide mem-ber 86 and encompassing the ratchet ybar 106 is a substantially rectangular slide member having internal teeth 132 adapted to mesh with the teeth 1%8 of the ratchet Ibar 106 -in various adjusted positions relative thereto. It will be understood from the foregoing description that when the crank arm 128 is pivoted in a counterclockwise direction, the teeth 108 will become disengaged 4from the teeth 132, thereby permitting the slide member 130 to move longitudinally of the guide member 86. Rotation of the crank arm 12S in the reverse, or clockwise direction, will cause engagement of the teeth 132 with the teeth 108, thereby locking the slide member l13:0 in a given position.

A lever 134 has one of its ends pivotally secured to the slide member 130 by means of a screw 136 and washer 138. The other end of the lever 134 is pivotally connected at by means of a rivet, or other suitable connection, to a tongue 142 which projects outwardly from the door jamb 22 through an opening 144, the tongue 142 forming an integral part of a bracket plate 146, the latter being ixedly secured to the door jamb 22 yby means of rivets `148.

One end of a lever is pivotally connected with the free end of the crank arm 12S and is retained thereon by means of a cotter pin 152. The pivot pin 154, or any other conventional means, is utilized to connect the other end of the lever 150 :to the ybell crank lever arm 44 adjacent the outer end thereof. As is seen in FIGURE 1, the lever 150 passes behind the tongue 34, and it is for this reason that the arm 44 is oifset with respect to the arm 40.

Axial displacement of the ratchet `bar 106 is prevented by means of ller blocks 156, 158 which are disposed Within the slots 68, 70, adjacent each end of the ratchet bar 106, and the iiller blocks are held in their respective positions by means of screws 161) which extend therethrough and through the end walls 58, 60.

The assembly of the door stop or check 16 is completed by providing inverted, substantially U-shaped shock absorbers 162 which are xedly secured to the end walls 58, 60 and which embrace the inverted, substantially U-shaped guide member 86.

Having described the rst embodiment of this invention in detail, it is `believed that the operation thereof is self-evident. However, and briey summarizing the same, it will be understood that when the handle 21tis depressed, the strip member 26 is caused to move laterally to the right, as viewed in FIGURE l of the drawings. Movement of the strip member 25 causes pivotal movement of the bell crank lever 3S in a counterclockwise direction, and in so moving, the lever 1S@ is raised. Since the lower end of the lever 154) is connected to the crank arm 128, the shaft 129 will be caused to rotate in a counterclockwise direction, as viewed in FIGURE 4, thereby causing the lever 124- to pivot in the same direction. Since the free ends of the levers 124 engage yagainst the bosses 118 of the ratchet bar 106, the ratchet bar is forced inwardly toward the 'bight 92 of the inverted U- shaped guide member $6. This occurs against the tension of :the helicoidal springs 114i-, 116. As the ratchet bar 105 moves inwardly, its teeth 1013 are disengaged from the teeth 132 formed on the slide member 13d', thereby freeing the same for sliding movement longitudinally of the guide member *86.

As soon as the ratchet bar 106 has been disengaged rom the slide member 136, the operator may now exert force on the door 12 in a direction such as to cause the same to open. As the `door 12 pivots about its respective pivot points (not shown) in the conventional manner, the lever 134 will also pivot and in so pivoting will cause the slide member 130 to move longitudinally of the guide member 86.

The `degree to which the door 12 is opened will determine the relative position of the slide member 130 with respect to the guide member 86. When the 'door is in its fully-opened position, the slide member will abut against the resilient shock absorber 166 at the extreme righthand side of FIGURE 3 of the drawings, or if it should be desired to open the door 12 only partially, the slide member 131i will resume a position intermediate the two resilient shock absorbers 162 and 166.

The operator, upon opening the door 12 to the desired degree, then releases the handle 24, whereupon the same returns to its original position. The return of the handle 24 `draws with it the strip member 26.

It must now be remembered that the helicoidal springs 114, 116 are so positioned as to bias the ratchet bar 106 in a direction away from the bight 92 and toward the teeth 132 of the slide member 130i. Thus, when the ratchet bar teeth 168 eifect engagement with the teeth 132 of the slide member 131) a force is exerted upon the levers 124 causing them to pivot in the reverse, or clockwise direction. Clockwise movement of the levers 124 introduces the same pivotal movement to the shaft 120 and this, in turn, rotates the crank arm 123 in such a direction as to draw downwardly the lever 150. Since the lever 1511r is pivotally connected to the bell crank lever arm 44, the bell crank lever 38 will pivot in a clockwise direction and will maintain contact of the roller 42 with the shoulder 32 of the strip member 26.

With the teeth S of the ratchet member 1116 engaged within the teeth 132 of the slide member 131i, when the latter has been moved to an adjusted position, funther outward movement of the door 12 is prevented. However, the operator may, when so desired, pull the door 12 to its closed posit-ion without funther actuation of the handle 24. This, is, of course, in accordance with the conventional operation of ratchet mechanisms.

Lt should also be noted at this point that any sudden forward movement of the vehicle will, under the force of inentia, tend to effect an automatic closing of the door 12.

Depending upon circumstances, the opposed vertical ends of the slide member 1311 are provided with threaded screw openings 164, 166, to optionally receive therein screws 136. Thus, the lever 134- may extend longitudinally of the underside of the main body portion 56 or, the door stop 1t)` may be inverted from its position shown in FIGURES l and 3.

As has been set forth above, means are provided for rendering .the door stop or latching mechanism in an inoperative position. To this end, the operator need but yto depress the handle 24- to cause the arm 44 to pivot upwardly. Thereafter, the handle 512 is pivoted from the dotted-line position shown in FIGURE 5 to its full-line position illustrated therein, whereby the disc 5ftmoves under the free end of the arm 44. In so moving, the lever is pulled upwardly causing either of the bars 1116, 106 to move out of engagement with the slide members 1311, 13th. The door 112 is, thus, free to rotatie about its pivotal axis without hindrance.

The modification of this invention, as illustrated in FIGURE 9 of the dnawings, is identical with respect to the first embodiment with but minor changes formed therein. Consequently, elements shown in FIGURE 9 having counterparts in the first embodiment may be distinguished therefrom through the addition of prime marks to the elements in common.

lIn the embodiment of the invention shown in FIGURE 9, the bar 1111il is provided with la plurality of depending rack gear teeth 170` which are adapted to mesh with rack gear teeth 172 formed on the slide member 130. With this construction the door 12 of the vehicle is positively locked in its fully-open, fully-closed, or an intermediateopen position, tand the ratchet feature, as described above, is omitted. In this last case, the door handle 24 must be op-enated each time the door 12 is moved to its closed position, or to any open position. In al1 other respects the inventions are identical.

FIGURES 6 to 8, inclusive, illustrate an application of either of these two embodiments described above to a conventional door. The door is herein designated by the reference numeral 2011y and is hingedly connected at 202 in the conventional rnanner to a door jamb 204. The door 201) includes the usual door stiles 206 between which extend the usual door rails r2418. The latter are disposed in laterally-spaced relation and between the same is located either of the above-described door checks or stops 10, 10. Any conventional means may be employed for securing the door stop 10' to one of the rails 203.

In this application of the invention, the strip member 134 is pivotally connected at 210 Ito an eye screw 212 xedly secured within the door jamb `Ztl/1J.

The shaft terminates, in this application, in a lever 214 disposed substantially at right angles to the shaft 120 and the free end thereof lterminates in an angular offset portion 216 substantially at in configuration. The liat end 216` normally enga-ges against the low side 217 of a cam, generally designated at 21S. The cam 218 is fixedly secured to one end of an elongated `shaft y221B which extends between the rails 208 and is xedly secured thereto and supported therefrom by means of journals 222.

Reference numerals 224, l2,26 denote the high sides of the cam 2118, `and it will be understood that as the slnaft 220 is rotated to bring one or the other thereof into engagement with the free end 216 of the lever 214, the coaction therebetween will cause the shaft 121) to rotate in a counterclockwise direction to effect movement of the ratchet bar 106 or the rack gear bar 106 toward the bright 92 of the guide member S6. They door Ztl@ is, thus, free .to pivot from the hull-line position shown in FIGURE 7 to its dotted-line position las illustrated therein.

Means are provided for leffecting the rotation of the shaft 220 from either side of the door 2601 These means comprise doorknobs 228, 239i connected for rotation, one

. 7 with the other, by means of a shaft 232, the shaft ,232 being connected with the conventional door-bolt actuating mechanism 234 which forms no part of the instant invention.

Fixedly secured to the shaft 232 for rotation therewith is la bevel gear 236 which meshes with a second bevel gear 238 rigidly secured to the shaft 220. Thus, as either of the knobs 228, 230 isV rotated to elect a withdrawal of the door bolt 240 from the door jamb i242, the shaft 220 is caused to rotate, and in so rotating to eiect clockwise movement of the lever 2M- whereby the door stop or latching mechanisms are free to move relative to one another. Rotation of the shaft 22d in the opposite direction will, of course, cause the slide member 130, or 130 to be Iengaged by the teeth carried on the bar 1%, 106 to hold ythe door 200 in any adjusted degree of opening desired by the operator.

Having described and illustrated in detail, several embodiments of -this invention, it is to be understood that fthe same are offered merely by Way of example, and that this invention is 'to be limited only by the scope of the appended claims.

What is claimed is:

l. A door stop for use on a door adapted to be hinged to a door jamb, comprising ian elongated guide member adapted to be attached to said door in the manner extending normally to said door jamb when said door is in its normally closed position, a sliding block member slidably mounted on said guide member, a lever having one of its 4ends pivotally connected to said slid-ing block member and having its other end adapted to be pivotally connected to said door jamb `at a position olset from the axis of rotation of said door on its hinges, means for locking said sliding block member ion said guide member at any position of travel of said sliding block member and comprising a mechanism connected to manually-operable door latch means, said mechanism including a reciprocable strip member positioned to slide in a path offset from, but parallel to said guide member, said strip member terminating in a shoulder, a bell crank lever pivotally mounted on said door and having one of its arms terminating in a roller adapted to Contact said shoulder of said strip member, land a vertically-extending actuating member connected to the other arm of said bell crank lever and connected to said means ior loclsing said sliding block member on said guide member, whereby said means for locking said sliding block member on said guide member may be operated by said manually-operable door latch means.

2.. A door stop comprising an elongated guide member for attachment to `a hinged door, said guide member being disposed substantially normally to the door jamb to which said door is hinged, a sliding block member slidably mounted on said guide member, a lever having one of its ends pivotally connected to said sliding block member and having its other end pivotally connected to said door jarnb ata position odset from the axis of rotation or" said door on its hinges, means for locking said sliding block member against said guide member at any position of travel of said sliding block member on said guide member, said means comprising a ratchet bar mounted for reciprocation on said guide member, said ratchet bar having a pin projecting laterally from each end thereof, said guide member having pockets Vformed therein to slidably receive said pins, said ratchet bar having ratchet teeth projecting therefrom in a direction opposite said pins, said sliding block member having formed thereon ratchet teeth adapted to mesh with said ratchet teeth formed on said guide member, resilient means interposed between said ratchet bar and said guide member, said resilient means constantly tending to urge said ratchet bar teeth into contact with said teeth formed on said sliding block member, and means for moving said ratchet bar in opposition to said resilient means to effect disengagement of said ratchet teeth of said ratchet bar from said ratchet teeth formed ion said sliding lblock member, said means comprising -an elongated shaft extending longitudinally of said guide member and rotatably supported thereon, one end 'of said shaft terminating in a crank arm, said shaft carrying a pair of levers `xedly secured thereto for rotation therewith and positioned on said shaft at opposite ends of said guide member, and said levers being adapted to rotate into Contact with the remotely-disposed ends of said ratchet bar upon rotation of said shatt to move said ratchet bar out of contact with said sliding block member.

3. A door stop as defined in claim 2, including a mechanism connecting said crank arm with a handle-operated door latch to elect engagement and disengagement of said ratchet bar with said ratchet teeth formed on said sliding block member.

4. A door stop as defined in claim 3, wherein said mechanism includes a vertically-extending member having its lower end pivotally connected to said crank arm and its upper end pivotally connected 4to one arm of a bell crank lever incorporated in said mechanism and including a horizontallyeslidable strip member connecting the other arm of said bell crank lever to lthe handle of said door latch.

5. A door stop las den'ed in claim 4, including a mechanism connecting said crank arm with a rotatable handleoperated door latch adapted to transmit motion to said crank arm, said mechanism including a vertically-extending pulling member having its lower end pivotally connected to said crank arm and its upper end connected to said one arm of said bell crank lever incorporated in said mechanism, and including a horizontally-slidable strip member connecting the iother `arm of said bell crank lever and said door latch, whereby operation tof said pulling member in la vertical direction will effect the engagement or disengagement of said ratchet bar teeth with said ratchet teeth formed on said sliding member.

6. A door stop as defined in claim 5, and means for locking said ratchet bar out of contact with the ratchet teeth formed on said sliding member.

7. A door stop comprising `an elongated substantially channel-shaped member having a main body portion including a bight from the ends of which project a pair of end walls, said main body portion Abeing mounted on said door with an end wall 4facing the door jamb from which the door is suspended, a U-shaped guide member having its ends xedly secured to said end walls and disposed in spaced relation relative to said bight, a bar mounted for reciprocation Within said U-shaped guide member, means disposed between said U-shaped member and said bar constantly biasing said bar for movement away from said U-shaped member, lever means pivotally supported on said main `body portion and engaging said bar to eiect movement :of said bar inwardly of said U- shaped member when said lever means are pivoted in one direction, said bar having teeth formed thereon facing outwardly of said U-shaped member, a substantially rectangular sliding block member slidably mounted on said U-shaped member and engaging around said bar, said block member having `teeth formed thereon facing said teeth formed on said bar and adapted to mesh therewith, a lever pivoltally connected to said block and said jamb, and means connected with said lever and a door handle for said door to effect disengagement o' said teeth formed on said bar and block.

8. A door stop as dened in claim 7, wherein said teeth -formed on said bar and said Iblock are of the ratchet type.

9. A door stop as deiined in @claim 7, wherein said teeth formed on said bar and said block are of the rack gear type.

10. In combination with `a door-bolt actuating mechanism, a strip member having an end thereof connected with said mechanism and movable therewith as said mechanism moves said door-bolt to its retracted position, said strip member being supported on said door for reciprocation thereon, a lbell crank lever pivotally mounted on said door and having an arm thereof disposed in the path of movement of said strip member, an elongated lever pivotally connected to the other arm of said bell crank lever adjacent the -free end thereof, a door stop comprising an elongated substantially channel-shaped main body portion including ya bight from the ends olf which project a pair of laterally-spaced `and substantially parallel end walls, said main body portion being mounted on said door with an end wall facing the door jamb from which said door is suspended, `a substantially U-shaped guide member having its opposed ends xedly secured to said end walls and disposed in laterally-spaced relation relative to said bight, ian elongated -bar mounted for reciprocation within said U-shaped member, means disposed between said U-shaped guide member rand said Ibar constantly biasing said bar for movement away from said U-shaped guide member, la shaft extending through said end walls and said bight and being rotatably mounted therein, said shaft having one of its ends terminating in a crank arm, means pivotally connecting said crank arm with the other end of said bell-'crank lever whereby movement of said bell-crank lever will force said crank arm to rotate and consequently said shaft, a lever `for each end of said bar,

said -levers having `one of their respective ends tixedly secured to said shaft for rotation therewith and their respective other ends constantly engaging the opposed ends of said bar, said shaft, upon movement in one direction, causing said levers to turn and force said bar inwardly within said U-shaped guide member, a sliding lblock member mounted for reciprocation on said U-shaped guide mem-ber, a lever having one of its ends pivotally connected to said sliding block member and its other end connected to said jamb, and interlocking means on said -bar and said sliding block engageable to prevent movement of said door when said bar is moved its maximum distance away from said U-shaped guide member.

References Cited in the le of this patent UNITED STATES PATENTS 411,557 Scarborough Sept. 24, 1889 942,310 Daly Dec. 7, 1909 1,738,381 Matthews De'c. 3, 1929 FOREIGN PATENTS 237,048 Germany July 19, 1911 16,856 Great Britain 1899 

7. A DOOR STOP COMPRISING AN ELONGATED SUBSTANTIALLY CHANNEL-SHAPED MEMBER HAVING A MAIN BODY PORTION INCLUDING A BIGHT FROM THE ENDS OF WHICH PROJECT A PAIR OF END WALLS, SAID MAIN BODY PORTION BEING MOUNTED ON SAID DOOR WITH AN END WALL FACING THE DOOR JAMB FROM WHICH THE DOOR IS SUSPENDED, A U-SHAPED GUIDE MEMBER HAVING ITS ENDS FIXEDLY SECURED TO SAID END WALLS AND DISPOSED IN SPACED RELATION RELATIVE TO SAID BIGHT, A BAR MOUNTED FOR RECIPROCATION WITHIN SAID U-SHAPED GUIDE MEMBER, MEANS DISPOSED BETWEEN SAID U-SHAPED MEMBER AND SAID BAR CONSTANTLY BIASING SAID BAR FOR MOVEMENT AWAY FROM SAID U-SHAPED MEMBER, LEVER MEANS PIVOTALLY SUPPORTED ON SAID MAIN BODY PORTION AND ENGAGING SAID 